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2022-2023学年四川省内江市高二年级下册学期第一次月考数学(文)试题

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2024年4月26日发(作者:由子萱)

2022-2023学年四川省内江市高二下学期第一次月考数学(文)试题

一、单选题

2

1.命题“

x0,x10

”的否定是(

2

A.

x0,x10

2

x0,x10

C.

2

B.

x0,x10

2

x0,x10

D.

【答案】C

【分析】由特称命题的否定是全称命题即可得出答案.

2

2

【详解】命题“

x0,x10

”的否定是:

x0,x10

.

故选:C.

x

2

y

2



1

2.椭圆

24

的离心率是(

2

A.

2

【答案】A

B.

2

6

C.

2

6

D.

3

【分析】根据题意求

a,b,c

,再求离心率即可.

22

a2,b2

cab2

,【详解】由题意可得:,且椭圆焦点在y轴上,则

c2

x

2

y

2

e





1

a2

.故椭圆

24

的离心率是

故选:A.

3.下列说法正确的是(

A.若

pq

为假命题,则p,q都是假命题

B.“这棵树真高”是命题

22

C.命题“

xR

使得

x2x30

”的否定是:“

xR

x2x30

D.在

ABC

中,“

A

B

”是“

sinAsinB

”的充分不必要条件

【答案】A

【分析】若

pq

为假命题,则p,q都是假命题,A正确,“这棵树真高”不是命题,B错误,否定是:

2

xR

x2x30

”,C错误,充分必要条件,D错误,得到答案.

【详解】对选项A:若

pq

为假命题,则p,q都是假命题,正确;

对选项B:“这棵树真高”不是命题,错误;

2

2

对选项C:命题“

xR

使得

x2x30

”的否定是:“

xR

x2x30

”,错误;

ab

对选项D:

A

B

,则

ab

2

R

2

R

,故

sinAsinB

,充分性;若

sinAsinB

,则

2RsinA2RsinB

ab

,则

A

B

,必要性,故是充分必要条件,错误.

故选:A

4.在如图所示的正方体

ABCDA

1

B

1

C

1

D

1

中,异面直线

A

1

B

B

1

C

所成角的大小为(

A.30°

【答案】C

B.45°C.60°D.90°

【分析】根据异面直线所成角的定义及正方体的特征求解

【详解】连接

A

1

D

DB

,如图,

因为正方体中

A

1

D//B

1

C

所以

BA

1

D

就是

A

1

B

B

1

C

所成的角,

BA

1

D

中,

A

1

DA

1

BBD

.

BA

1

D60

.

故选:C

x

2

y

2

2

1

a

0,b

0

2

b

5.已知双曲线

a

的两条渐近线相互垂直,焦距为

12

,则该双曲线的虚轴长为

A.

6

【答案】B

B.

62

C.

92

D.

122

【分析】分析可得

ba

,求出

b

的值,即可得出双曲线的虚轴长.

x

2

y

2

b

2

1

a

0,b

0

y



x

2

b

a

,【详解】双曲线

a

的渐近线方程为

bb



1

22

由题意可知

aa

,可得

ba

,所以,

cab2b6

,则

b32

因此,该双曲线的虚轴长为

2b62

.

故选:B.

x

2

y

2



1

ymx2

9n

6.若直线与焦点在x轴上的椭圆总有公共点,则n的取值范围是(

A.

0,4

B.

4,9

4,9

C.

D.

4,9

9,

【答案】C

【分析】由题得直线所过定点

x

轴上即可.

0,2

在椭圆上或椭圆内,代入椭圆得到不等式,再结合椭圆焦点在

【详解】直线

ymx2

恒过定点

0,2

,若直线与椭圆总有公共点,

4



1

0,2



n

则定点在椭圆上或椭圆内,,解得

n4

n0

x

2

y

2



1

n

4,9

9n

又表示焦点在

x

轴上的椭圆,故

0n9

,,

故选:C.

x

2

y

2



1

F

MFMF

2

F

1

2

45

7.已知,分别为双曲线的左、右焦点,

M

为双曲线右支上一点,满足

1

△F

1

MF

2

的面积为(

A.

5

【答案】A

【分析】由

B.

10

C.

14

D.

214

MF

1

MF

2

可以求得M在以原点为圆心,焦距为直径的圆周上,写出圆的方程,与双曲

线的方程联立求得M的坐标,进而得到所求面积.

2

【详解】设双曲线的焦距为

2c

,则

c459

.

22

MFMF

xy9

与双曲线的交点.

12

M

因为,所以为圆

x

2

y

2

9

2

xy

2

5

1

y

5

3

,联立

4

,解得

15

6



5

△FMF

12

23

所以的面积为.

故选:A.

【点睛】本题考查与双曲线有关的三角形面积最值问题,利用轨迹方程法是十分有效和简洁的解法.

x

2

y

2

E:

2

2

1(a

b

0)

ab

8.已知椭圆的左、右焦点分别为

F

1

,F

2

,过坐标原点的直线交

E

P,Q

两点,

PF

2

F

2

Q

,且

S

PF

2

Q

4,PF

2

F

2

Q6

,则椭圆

E

的标准方程为(

x

2

y

2



1

43

A.

x

2

y

2



1

94

C.

【答案】C

x

2

y

2



1

54

B.

x

2

y

2



1

95

D.

【分析】根据椭圆的定义可求

a3

,结合三角形的面积可求

c

,进而可得答案.

【详解】如图,连接

所以

PF

1

,QF

1

,由椭圆的对称性得四边形

PFQF

12

为平行四边形,

,得

a3

.

PF

2

F

2

QPF

2

PF

1

2a6

又因为

PF

2

m,QF

2

n

PF

2

F

2

Q

,所以四边形

PFQF

12

为矩形,设,

m

n

6,

m

4

m

2

1



mn4

n

2

mn

8,

2

,所以得或

n

4

222

,则

c5,bac4

S

PF

2

Q

F

1

F

2

25

x

2

y

2



1

94

E

椭圆的标准方程为.

故选:C.

x

2

y

2

M:

2



1(

2

m

0)

m2m

6

9.当双曲线的焦距取得最小值时,双曲线M的渐近线方程为

A.y=±

2

x

C.y=±2x

【答案】C

2

B.y=±

2

x

1

D.y=±

2

x

【解析】求得

c

关于

m

的函数表达式,并利用配方法和二次函数的性质得到取得最小值时

m

的值,

进而得到双曲线的标准方程,根据标准方程即可得出渐近线方程

【详解】由题意可得c

2

=m

2

+2m+6=(m+1)

2

+5,

当m=-1时,c

2

取得最小值,即焦距2c取得最小值,

2

y

2

x1

4

此时双曲线M的方程为,所以渐近线方程为y=±2x.

2

故选:C.

【点睛】本题考查双曲线的标准方程与几何性质,属基础题,掌握双曲线的基本量

a,b,c

的关系是

22

22

AxBy0

得出.

AxBy

(AB0,

0)

关键.由双曲线的方程:的渐近线可以统一由

7

PF2PF

2

F

10.已知

1

F

2

是椭圆C的两个焦点,P为C上一点,

1

,若C的离心率为

3

,则

F

1

PF

2

A.

150

【答案】B

【分析】根据椭圆的定义,结合余弦定理、椭圆离心率的公式进行求解即可.

【详解】解:记

B.

120

C.

90

D.

60

r

1

PF

1

r

2

PF

2

,由

r

1

2r

2

,及

r

1

r

2

2a

,得

r

1

2

4

a

r

2

a

3

,又由余弦定

3

20a

2

16a

2

cosF

1

PF

2

4c

2

222

9

理知

r

1

r

2

2r

1

r

2

cosF

1

PF

2

4c

,得

9

.

16a

2

8a

2

c7

7

2

1

2

cosF

1

PF

2



e



ca

cosF

1

PF

2



9

,∴

a3

,得

9

,从而

9

2

.由

0F

1

PF

2

180

,∴

F

1

PF

2

120

.

故选:B

11.吹奏乐器“埙”(如图1)在古代通常是用陶土烧制的,一种埙的外轮廓的上部是半椭圆,下部

y

2

x

2

222

2

1

2

xyb

y0

组成的曲线

y0

b

是半圆.半椭圆

a

(,

a

b

0

且为常数)和半圆

C

如图2所示,曲线

C

x

轴的负半轴于点

A

,交

y

轴的正半轴于点

G

,点

M

是半圆上任意一点,

21

2

,

2



时,

AGM

的面积最大,则半椭圆的方程是()

M

当点的坐标为

4x

2

y

2

1

y0

32

A.

2x

2

4y

2

1

y0

33

C.

【答案】D

16x

2

y

2

1

y0

93

B.

4x

2

2y

2

1

y0

33

D.

21

M

2

,

2

在半圆上,可求

b

,然后求出G,A,根据已知

AGM

的面积最大的条【分析】由点

kk1

,代入可求

a

,进而可求椭圆方程件可知,

OMAG

,即

OMAG

21

3

M

b

2

,

2

在半圆上,所以

2

G(0,a),A(b,0)

,【详解】由点

21

M

2

,

2



时,M到直线AG的

AGM

要使的面积最大,可平行移动AG,当AG与半圆相切于

kk1

,距离最大, 此时

OMAG

,即

OMAG

k

OM



1

2a

2



,k

AG

,

2b

2

2

2a6



1,

a

2b

2b2

4x

2

2y

2

1

y0

33

所以半椭圆的方程为

故选:D

x

2

y

2

x

2

y

2

C

1

:

2

2

1

a

1

b

1

0

C

2

:

2

2

1

a

2

0,b

2

0

F

F

ab

a

2

b

2

11

12.已知

1

2

为椭圆与双曲线的公共焦点,

M

是它们的一个公共点,且

F

1

MF

2

π

3

e

1

e

2

分别为曲线

C

1

C

2

的离心率,则

e

1

e

2

的最小值为

3

A.

2

【答案】A

B.

3

C.1

1

D.

2

MF

1

a

1

a

2

MF

a

1

a

2

△MF

1

F

2

中,由余弦定理得【分析】由题可得

2

,在

F

1

F

2

2

MF

1

2

MF

2

2

2MF

1

MF

2

cos

222

3

,结合基本不等式得

4ca

1

3a

2

23a

1

a

2

,即可解决.

x

2

y

2

x

2

y

2

C

1

:

2

2

1

a

1

b

1

0

C

2

:

2

2

1

a

2

0,b

2

0

F

F

a

1

b

1

a

2

b

2

【详解】由题知,

1

2

为椭圆与双曲线的

公共焦点,

M

是它们的一个公共点,且

假设

MF

1

MF

2

F

1

MF

2

3

e

1

e

2

分别为曲线

C

1

C

2

的离心率,

MF

1

MF

2

2a

1

MF

1

a

1

a

2

MF

1

MF

2

2a

2

MF

a

1

a

2

所以由椭圆,双曲线定义得,解得

2

所以在

△MF

1

F

2

中,

F

1

F

2

2c

,由余弦定理得

π

3

,即

F

1

F

2

2

MF

1

2

MF

2

2

2MF

1

MF

2

cos

22

4c

2

a

1

a

2

a

1

a

2

2

a

1

a

2

a

1

a

2

cos

222

化简得

4ca

1

3a

2

π

3

222

4ca3a23a

1

a

2

12

因为

c

2

233

3



e

1

e

2

42

,即

2

,所以

a

1

a

2

当且仅当

a

1

3a

2

时,取等号,

故选:A

二、填空题

22

4xy1

的一个焦点

F

1

的直线与椭圆交于A,B两点,则A与B和椭圆的另一个焦点13.过椭圆

F

2

构成的的周长为__________

【答案】4

【分析】先将椭圆的方程化为标准形式,求得半长轴

a

的值,然后利用椭圆的定义进行转化即可求

得.

x

2

y1

1

4

【详解】解:椭圆方程可化为,显然焦点在y轴上,

a1

2

根据椭圆定义

所以

AF

1

AF

2

2a,BF

1

BF

2

2a

ABF

2

的周长为

AF

1

AF

2

BF

1

BF

2

4a4

故答案为4.

2

14.若命题“

xR

axax10

”为假命题,则a的取值范围是______.

【答案】

(,0)(4,)

【分析】先求得命题为真时的等价条件,取补集即可得到为假命题时的参数取值范围.

【详解】当

a0

时,命题为“

xR

10

”,该命题为真命题,不满足题意;

Δ

a

2

4a

0

2

a

0

a0

时,命题

xR

axax10

可得到

,解得

0a4

2

故若命题“

xR

axax10

”是假命题,则

a(,0)(4,)

故答案为:

(,0)(4,)

x

2

y

2



1

F

2516

15.已知椭圆C:,

1

F

2

为椭圆的左右焦点.若点P是椭圆上的一个动点,点A的坐

标为(2,1),则

PAPF

1

的范围为_____.

【答案】

[102,102]

2024年4月26日发(作者:由子萱)

2022-2023学年四川省内江市高二下学期第一次月考数学(文)试题

一、单选题

2

1.命题“

x0,x10

”的否定是(

2

A.

x0,x10

2

x0,x10

C.

2

B.

x0,x10

2

x0,x10

D.

【答案】C

【分析】由特称命题的否定是全称命题即可得出答案.

2

2

【详解】命题“

x0,x10

”的否定是:

x0,x10

.

故选:C.

x

2

y

2



1

2.椭圆

24

的离心率是(

2

A.

2

【答案】A

B.

2

6

C.

2

6

D.

3

【分析】根据题意求

a,b,c

,再求离心率即可.

22

a2,b2

cab2

,【详解】由题意可得:,且椭圆焦点在y轴上,则

c2

x

2

y

2

e





1

a2

.故椭圆

24

的离心率是

故选:A.

3.下列说法正确的是(

A.若

pq

为假命题,则p,q都是假命题

B.“这棵树真高”是命题

22

C.命题“

xR

使得

x2x30

”的否定是:“

xR

x2x30

D.在

ABC

中,“

A

B

”是“

sinAsinB

”的充分不必要条件

【答案】A

【分析】若

pq

为假命题,则p,q都是假命题,A正确,“这棵树真高”不是命题,B错误,否定是:

2

xR

x2x30

”,C错误,充分必要条件,D错误,得到答案.

【详解】对选项A:若

pq

为假命题,则p,q都是假命题,正确;

对选项B:“这棵树真高”不是命题,错误;

2

2

对选项C:命题“

xR

使得

x2x30

”的否定是:“

xR

x2x30

”,错误;

ab

对选项D:

A

B

,则

ab

2

R

2

R

,故

sinAsinB

,充分性;若

sinAsinB

,则

2RsinA2RsinB

ab

,则

A

B

,必要性,故是充分必要条件,错误.

故选:A

4.在如图所示的正方体

ABCDA

1

B

1

C

1

D

1

中,异面直线

A

1

B

B

1

C

所成角的大小为(

A.30°

【答案】C

B.45°C.60°D.90°

【分析】根据异面直线所成角的定义及正方体的特征求解

【详解】连接

A

1

D

DB

,如图,

因为正方体中

A

1

D//B

1

C

所以

BA

1

D

就是

A

1

B

B

1

C

所成的角,

BA

1

D

中,

A

1

DA

1

BBD

.

BA

1

D60

.

故选:C

x

2

y

2

2

1

a

0,b

0

2

b

5.已知双曲线

a

的两条渐近线相互垂直,焦距为

12

,则该双曲线的虚轴长为

A.

6

【答案】B

B.

62

C.

92

D.

122

【分析】分析可得

ba

,求出

b

的值,即可得出双曲线的虚轴长.

x

2

y

2

b

2

1

a

0,b

0

y



x

2

b

a

,【详解】双曲线

a

的渐近线方程为

bb



1

22

由题意可知

aa

,可得

ba

,所以,

cab2b6

,则

b32

因此,该双曲线的虚轴长为

2b62

.

故选:B.

x

2

y

2



1

ymx2

9n

6.若直线与焦点在x轴上的椭圆总有公共点,则n的取值范围是(

A.

0,4

B.

4,9

4,9

C.

D.

4,9

9,

【答案】C

【分析】由题得直线所过定点

x

轴上即可.

0,2

在椭圆上或椭圆内,代入椭圆得到不等式,再结合椭圆焦点在

【详解】直线

ymx2

恒过定点

0,2

,若直线与椭圆总有公共点,

4



1

0,2



n

则定点在椭圆上或椭圆内,,解得

n4

n0

x

2

y

2



1

n

4,9

9n

又表示焦点在

x

轴上的椭圆,故

0n9

,,

故选:C.

x

2

y

2



1

F

MFMF

2

F

1

2

45

7.已知,分别为双曲线的左、右焦点,

M

为双曲线右支上一点,满足

1

△F

1

MF

2

的面积为(

A.

5

【答案】A

【分析】由

B.

10

C.

14

D.

214

MF

1

MF

2

可以求得M在以原点为圆心,焦距为直径的圆周上,写出圆的方程,与双曲

线的方程联立求得M的坐标,进而得到所求面积.

2

【详解】设双曲线的焦距为

2c

,则

c459

.

22

MFMF

xy9

与双曲线的交点.

12

M

因为,所以为圆

x

2

y

2

9

2

xy

2

5

1

y

5

3

,联立

4

,解得

15

6



5

△FMF

12

23

所以的面积为.

故选:A.

【点睛】本题考查与双曲线有关的三角形面积最值问题,利用轨迹方程法是十分有效和简洁的解法.

x

2

y

2

E:

2

2

1(a

b

0)

ab

8.已知椭圆的左、右焦点分别为

F

1

,F

2

,过坐标原点的直线交

E

P,Q

两点,

PF

2

F

2

Q

,且

S

PF

2

Q

4,PF

2

F

2

Q6

,则椭圆

E

的标准方程为(

x

2

y

2



1

43

A.

x

2

y

2



1

94

C.

【答案】C

x

2

y

2



1

54

B.

x

2

y

2



1

95

D.

【分析】根据椭圆的定义可求

a3

,结合三角形的面积可求

c

,进而可得答案.

【详解】如图,连接

所以

PF

1

,QF

1

,由椭圆的对称性得四边形

PFQF

12

为平行四边形,

,得

a3

.

PF

2

F

2

QPF

2

PF

1

2a6

又因为

PF

2

m,QF

2

n

PF

2

F

2

Q

,所以四边形

PFQF

12

为矩形,设,

m

n

6,

m

4

m

2

1



mn4

n

2

mn

8,

2

,所以得或

n

4

222

,则

c5,bac4

S

PF

2

Q

F

1

F

2

25

x

2

y

2



1

94

E

椭圆的标准方程为.

故选:C.

x

2

y

2

M:

2



1(

2

m

0)

m2m

6

9.当双曲线的焦距取得最小值时,双曲线M的渐近线方程为

A.y=±

2

x

C.y=±2x

【答案】C

2

B.y=±

2

x

1

D.y=±

2

x

【解析】求得

c

关于

m

的函数表达式,并利用配方法和二次函数的性质得到取得最小值时

m

的值,

进而得到双曲线的标准方程,根据标准方程即可得出渐近线方程

【详解】由题意可得c

2

=m

2

+2m+6=(m+1)

2

+5,

当m=-1时,c

2

取得最小值,即焦距2c取得最小值,

2

y

2

x1

4

此时双曲线M的方程为,所以渐近线方程为y=±2x.

2

故选:C.

【点睛】本题考查双曲线的标准方程与几何性质,属基础题,掌握双曲线的基本量

a,b,c

的关系是

22

22

AxBy0

得出.

AxBy

(AB0,

0)

关键.由双曲线的方程:的渐近线可以统一由

7

PF2PF

2

F

10.已知

1

F

2

是椭圆C的两个焦点,P为C上一点,

1

,若C的离心率为

3

,则

F

1

PF

2

A.

150

【答案】B

【分析】根据椭圆的定义,结合余弦定理、椭圆离心率的公式进行求解即可.

【详解】解:记

B.

120

C.

90

D.

60

r

1

PF

1

r

2

PF

2

,由

r

1

2r

2

,及

r

1

r

2

2a

,得

r

1

2

4

a

r

2

a

3

,又由余弦定

3

20a

2

16a

2

cosF

1

PF

2

4c

2

222

9

理知

r

1

r

2

2r

1

r

2

cosF

1

PF

2

4c

,得

9

.

16a

2

8a

2

c7

7

2

1

2

cosF

1

PF

2



e



ca

cosF

1

PF

2



9

,∴

a3

,得

9

,从而

9

2

.由

0F

1

PF

2

180

,∴

F

1

PF

2

120

.

故选:B

11.吹奏乐器“埙”(如图1)在古代通常是用陶土烧制的,一种埙的外轮廓的上部是半椭圆,下部

y

2

x

2

222

2

1

2

xyb

y0

组成的曲线

y0

b

是半圆.半椭圆

a

(,

a

b

0

且为常数)和半圆

C

如图2所示,曲线

C

x

轴的负半轴于点

A

,交

y

轴的正半轴于点

G

,点

M

是半圆上任意一点,

21

2

,

2



时,

AGM

的面积最大,则半椭圆的方程是()

M

当点的坐标为

4x

2

y

2

1

y0

32

A.

2x

2

4y

2

1

y0

33

C.

【答案】D

16x

2

y

2

1

y0

93

B.

4x

2

2y

2

1

y0

33

D.

21

M

2

,

2

在半圆上,可求

b

,然后求出G,A,根据已知

AGM

的面积最大的条【分析】由点

kk1

,代入可求

a

,进而可求椭圆方程件可知,

OMAG

,即

OMAG

21

3

M

b

2

,

2

在半圆上,所以

2

G(0,a),A(b,0)

,【详解】由点

21

M

2

,

2



时,M到直线AG的

AGM

要使的面积最大,可平行移动AG,当AG与半圆相切于

kk1

,距离最大, 此时

OMAG

,即

OMAG

k

OM



1

2a

2



,k

AG

,

2b

2

2

2a6



1,

a

2b

2b2

4x

2

2y

2

1

y0

33

所以半椭圆的方程为

故选:D

x

2

y

2

x

2

y

2

C

1

:

2

2

1

a

1

b

1

0

C

2

:

2

2

1

a

2

0,b

2

0

F

F

ab

a

2

b

2

11

12.已知

1

2

为椭圆与双曲线的公共焦点,

M

是它们的一个公共点,且

F

1

MF

2

π

3

e

1

e

2

分别为曲线

C

1

C

2

的离心率,则

e

1

e

2

的最小值为

3

A.

2

【答案】A

B.

3

C.1

1

D.

2

MF

1

a

1

a

2

MF

a

1

a

2

△MF

1

F

2

中,由余弦定理得【分析】由题可得

2

,在

F

1

F

2

2

MF

1

2

MF

2

2

2MF

1

MF

2

cos

222

3

,结合基本不等式得

4ca

1

3a

2

23a

1

a

2

,即可解决.

x

2

y

2

x

2

y

2

C

1

:

2

2

1

a

1

b

1

0

C

2

:

2

2

1

a

2

0,b

2

0

F

F

a

1

b

1

a

2

b

2

【详解】由题知,

1

2

为椭圆与双曲线的

公共焦点,

M

是它们的一个公共点,且

假设

MF

1

MF

2

F

1

MF

2

3

e

1

e

2

分别为曲线

C

1

C

2

的离心率,

MF

1

MF

2

2a

1

MF

1

a

1

a

2

MF

1

MF

2

2a

2

MF

a

1

a

2

所以由椭圆,双曲线定义得,解得

2

所以在

△MF

1

F

2

中,

F

1

F

2

2c

,由余弦定理得

π

3

,即

F

1

F

2

2

MF

1

2

MF

2

2

2MF

1

MF

2

cos

22

4c

2

a

1

a

2

a

1

a

2

2

a

1

a

2

a

1

a

2

cos

222

化简得

4ca

1

3a

2

π

3

222

4ca3a23a

1

a

2

12

因为

c

2

233

3



e

1

e

2

42

,即

2

,所以

a

1

a

2

当且仅当

a

1

3a

2

时,取等号,

故选:A

二、填空题

22

4xy1

的一个焦点

F

1

的直线与椭圆交于A,B两点,则A与B和椭圆的另一个焦点13.过椭圆

F

2

构成的的周长为__________

【答案】4

【分析】先将椭圆的方程化为标准形式,求得半长轴

a

的值,然后利用椭圆的定义进行转化即可求

得.

x

2

y1

1

4

【详解】解:椭圆方程可化为,显然焦点在y轴上,

a1

2

根据椭圆定义

所以

AF

1

AF

2

2a,BF

1

BF

2

2a

ABF

2

的周长为

AF

1

AF

2

BF

1

BF

2

4a4

故答案为4.

2

14.若命题“

xR

axax10

”为假命题,则a的取值范围是______.

【答案】

(,0)(4,)

【分析】先求得命题为真时的等价条件,取补集即可得到为假命题时的参数取值范围.

【详解】当

a0

时,命题为“

xR

10

”,该命题为真命题,不满足题意;

Δ

a

2

4a

0

2

a

0

a0

时,命题

xR

axax10

可得到

,解得

0a4

2

故若命题“

xR

axax10

”是假命题,则

a(,0)(4,)

故答案为:

(,0)(4,)

x

2

y

2



1

F

2516

15.已知椭圆C:,

1

F

2

为椭圆的左右焦点.若点P是椭圆上的一个动点,点A的坐

标为(2,1),则

PAPF

1

的范围为_____.

【答案】

[102,102]

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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
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File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
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File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729613161)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729613161)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729835953)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729835953)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729924188)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729924188)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1729971487)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1729971487)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1730140645)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1730140645)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1737087437)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1737087437)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1738066541)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1738066541)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1738313802)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1738313802)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1095, humandate(1741136189)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(26))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
Error[2]: Trying to access array offset on value of type int, File: /www/wwwroot/www.usbmi.com/xiunophp/xiunophp.min.php, Line: 54
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 1096, humandate(1741136189)
File: /www/wwwroot/www.usbmi.com/tmp/model_thread.func.php, Line: 662, well_thread_format(array(27))
File: /www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm, Line: 249, well_thread_find_asc(array(20) , 20)
File: /www/wwwroot/www.usbmi.com/tmp/route_read.php, Line: 204, include(/www/wwwroot/www.usbmi.com/tmp/view_template_d8_htm_read.htm)
File: /www/wwwroot/www.usbmi.com/tmp/index.inc.php, Line: 129, include(/www/wwwroot/www.usbmi.com/tmp/route_read.php)
File: /www/wwwroot/www.usbmi.com/index.php, Line: 29, include(/www/wwwroot/www.usbmi.com/tmp/index.inc.php)
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